Isobutyl ester of the di-iodide of behenolic acid and process of preparing same



Patented Oct. 16, 1928.

UNITED STATES PATENT OFFICE.

SIGNOR TO WINTHROP CHEMICAL COMPANY,

ISOBUTYL ESTER THE .DI-IODIDE OF BEHENOLIC ACID AND PROCESS INC., 013 NEW YORK, N. Y.

OF PREPARING SAME.

No Drawingv Application filed May 11, 1926, Serial N 0. 108,413, and in Germany May 12, 1925.

My invention relates to the hitherto unknown ester of di-iodide of behenolic acid with isobutyl alcohol. The new compound has most probably the following formula i CH:

onuono z-tii-o oi-11 1 1-ooo-o11,-o12 It is a useful product in medicine. It isspecially suitable for subcutaneous use in View of its oily form and absence of irritation.

The process for producing the new 'com pound consists in esterifying the di-iodide of behenolic acid or by treating with iodin or iodin furnishing substances the ester of isobutyl alcohol with behenolic acid or by treating other esters of the di-iodideof behenolic acid with isobutyl alcohol.

In order to illustrate my invention more fully the following example is given, the parts being by weight One part of the di-iodide of behenolic acid is heated to 100 C. during several hours together with 3 parts of isobutyl alcohol containingv 4 per cent of concentrated sulfuric acid. The reaction mass is shaken for se ester of the di-iodide of behenolic acid, which process consists in substituting the hydrogen eral times with water to remove the excess of alcohol. Subsequently the ester is dissolved in ether, the ether is dried with Na SO and driven off. The resulting ester recrystallizes from alcohol at 0 C.It is a limped oil 30 solidifying at 14 C. and containing 39.2 per cent of iodin.

I claim 1. The process of producing the isobutyl of the carboxylic group of the di-iodide of, behenolic acid by the isobutyl radicle.

2. The new isobutyl ester of the di-iodide behenolic acid having most probably the formula m hand..

y AUGUST WINGLER. 

